@m_magalhaes

Hello, Thank you so much.

@Cairyn
Hi,
Thank you.

Solution:

Float GeIncircle(Int32 n, Float r)
{
	return r * cos(PI / n);
}

Float	max_rrad = GeIncircle(n, r);

Hi,
I'm searching how to calculate the rounding radius maximum value of a n-Side object.
I tried with the following but it doesn't work:

Float calculateSide(Int32 n, Float r)
{
	Float theta, theta_in_radians;
	theta = 360 / n;
	theta_in_radians = theta * 3.14 / 180;
	return 2 * r * sin(theta_in_radians / 2);
}


Float	max_rrad = calculateSide(n, r)/2;

Thanks

@r_gigante

Hi Riccardo, thank you for your detailed response. That allowed me to find the exact formula.

l / (2 * tan((180 / n) * 3.14159 / 180))

Regards, Mustapha

Hi,
I'm searching the formula to automatically calculate the Cloner object radius depending on the number of clones (Count) and the Plain object width to obtain a perfect circle of objects without any objects spacing or overlap. see screenshot below:

Thanks.

@m_magalhaes
Hi,

The following code works, but the op dirty is updated every time an object in my scene is moved. Not only when the target object is changing position. I don't know if this is Ok or not.

Float checkDirty;

BaseObject* MagicStudio::GetVirtualObjects(BaseObject* op, HierarchyHelp* hh)
{
	// Check the passed pointer.
	if (!op)
		return BaseObject::Alloc(Onull);

	BaseDocument* doc = op->GetDocument();
	BaseObject* activeObj = doc->GetActiveObject();

	if (activeObj) {
		Float activeObjDirty = activeObj->GetDirty(DIRTYFLAGS_MATRIX);
		if (activeObjDirty) {
			if (checkDirty != activeObjDirty) {
				checkDirty = activeObjDirty;
				op->SetDirty(DIRTYFLAGS_DATA | DIRTYFLAGS_MATRIX);
			}
		}
	}

	Bool bIsDirty = op->CheckCache(hh) || op->IsDirty(DIRTYFLAGS_DATA | DIRTYFLAGS_MATRIX);

	if (!bIsDirty)
		return op->GetCache(hh);

	...

}

@m_magalhaes

Hi,
I tried with the following code, it's work only when I drag my target object into the link box, but when I move the target object nothing happens.

Bool bIsDirty = op->CheckCache(hh) || op->IsDirty(DIRTYFLAGS_DATA | DIRTYFLAGS_MATRIX);

if (!bIsDirty)
	return op->GetCache(hh);

@m_magalhaes
Hi,
I have an additional question concerning this subject.
When I link object via the link box (Description Resource), The targetObj is not taken into account by the eyeObj immediately, but only after I change any parameter of my plugin object. The rotation change is not updated when I moving the target object.

...

BaseList2D*	targetLink = data->GetLink(MYOBJECT_TARGET_OBJECT, doc);
BaseObject* targetObj = static_cast<BaseObject*> (targetLink);

Vector = eye = eyeObj->GetAbsPos();
Vector = target = targetObj->GetAbsPos();

Vector direction = (target - eye).GetNormalized();
Vector hpb = VectorToHPB(direction);

eyePtr->SetRelRot(hpb);

Thanks.

@m_magalhaes
Hi,
Thank you so much @m_magalhaes and @zipit

I used the following code:

Vector direction = (target - eye).GetNormalized();
Vector hpb = VectorToHPB(direction);

eyePtr->SetRelRot(hpb);

This line is good:

if (!ParentPtr || !OrbitPtr)
	return false;

This line is inside a global function and not directly inside the GVO function. like the function CreateTempleBase() from the SDK Greek Temple example.

static Bool CreateTempleRoof(BaseObject* &parentObj, const Float& baseUnit, const Vector& objSize, const Int32* objSegsPtr = nullptr);
static Bool CreateTempleRoof(BaseObject* &parentObj, const Float& baseUnit, const Vector& objSize, const Int32* objSegsPtr /*= nullptr*/)
{
	...

	return true;
}

Hi,
I want to apply a Target Expression tag to one of a child objects of GetVirtualObjects. is it possible?
I tried with following code but nothing happens (The Target Expression tag is was added to the "Orbit" Null object, together with the target link but the Null object is not looking to the target).

BaseContainer* data = op->GetDataInstance();

...

AutoAlloc<BaseObject>	ParentPtr(Onull);
AutoAlloc<BaseObject>	OrbitPtr(Onull);

if (!ParentPtr || !OrbitPtr)
	return false;

BaseDocument* doc = op->GetDocument();

ParentPtr->SetName("Parent");
OrbitPtr->SetName("Orbit");

BaseDocument* doc = op->GetDocument();

BaseTag* tagTarget = OrbitPtr->MakeTag(Ttargetexpression);

BaseList2D*	oTarget = data->GetLink(MYOBJECT_TARGET, doc);

tagTarget->GetDataInstance()->SetLink(TARGETEXPRESSIONTAG_LINK, oTarget);

OrbitPtr->InsertUnder(ParentPtr);

...